Rainwater Harvesting Systems - Bord na Móna
-
Upload
green-action-sustainable-technology-group -
Category
Documents
-
view
227 -
download
0
Transcript of Rainwater Harvesting Systems - Bord na Móna
8/9/2019 Rainwater Harvesting Systems - Bord na Móna
http://slidepdf.com/reader/full/rainwater-harvesting-systems-bord-na-mona 1/6
8/9/2019 Rainwater Harvesting Systems - Bord na Móna
http://slidepdf.com/reader/full/rainwater-harvesting-systems-bord-na-mona 2/6www.bnm.ie
Rainwater harvesting is not a new concept . Its popularity has
increased signi cantly in recent years with the recognition that
mains tap water is becoming an increasingly precious commodity.Rainwater o ers a sustainable, environmental alternative to
puri ed drinking water or non-potable use. Collecting rain rom
your roo also reduces sur ace water rom your development and
may o er a storm water management solution .
Nature delivers an abundant supply o so t rainwater, directly
to your property. The roo , gutters and down pipes act as an
inbuilt collection system. The RainSava rainwater harvestingsystem works by taking this rain, ltering out leaves and debris
and storing the water in an underground tank. The water is then
pumped into the property to be used or non-potable applications
such as toilet fushing, washing machines and or outside use
such as garden watering and car washing.
Three Important Principles o Rainwater Storage:
1. Water that enters the tank must be ‘calmed’ - i.e. rather
than openly discharge into the tank it should be directed to the bottom where it can gently percolate upwards, below the
minimum water level.
2. The tank must over ow periodically , at least twice per year, in
order that any foating debris can be removed by the skimming
e ect o a suitable overfow device. For this reason the volume
o the tank should be care ully calculated to ensure that
overfow conditions occur.
These rst two principles are taken care o by the ‘smoothing
inlet’ and the ‘multisiphon’ overfow trap tted to RainSava
tanks as supplied by Bord na Móna Environmental Ltd.
3. Water should be extracted rom the cleanest part o the tank ;
i.e. just below the sur ace, as achieved by the use o a xed or
foating suction lter. This ensures that the water extracted avoids
both foating debris and bottom sediments. It is important that this bottom sediment is not disturbed as in time it will orm a
bene cial biological layer that assists in maintaining water quality.
Cleaning the lea lter is the only routine maintenance necessary
or the operation o the system, although a visual check o the tank
and its components should be carried out on an annual basis.
The RainSava system is made up o a number o separate
components. Some o these are to be located in the underground
storage tank, whilst the fow controller, the mains water top-
up assembly and the level gauge (i used) are to be tted in a
convenient location within the building (e.g. utility or plant room).
RainSava: The Bord na Móna Environmental Rainwater Harvesting Solution
R a i n w a t e r H a r v e s t i n g
8/9/2019 Rainwater Harvesting Systems - Bord na Móna
http://slidepdf.com/reader/full/rainwater-harvesting-systems-bord-na-mona 3/6
8/9/2019 Rainwater Harvesting Systems - Bord na Móna
http://slidepdf.com/reader/full/rainwater-harvesting-systems-bord-na-mona 4/6www.bnm.ie
R a
i n w a
t e r
H a r v e s
t i n g
Ideally Suited to Commercial Applications, the large roo area
can catch a large volume o rain water. Suitable or:
• Of ce Buildings• Warehouse & Factories
• Industrial Developments
• Schools & Public Buildings
• Farms and Agricultural Buildings
• Garden Centres & Nurseries
• Housing Developments
• Car & Truck Washes
Benefts o the RainSava system or Commercial applications:
• Commercial developments have a greater requirement fornon-potable water or uses such as toilet fushing, wash downetc. Rainwater collected rom the roo can be used or nonpotable requirements.
• Commercial water is metered and businesses have to pay forwater used – the RainSava allows you to replace mains waterwith rain water rom your roo .
• The nancial bene t by converting from mains water torain water usage begins as soon as the RainSava system is
installed and operational.• Many commercial premises have large roof areas and are
there ore able to collect large volumes o rainwater.
• The RainSava system can be designed speci cally by the Bordna Móna Environmental technical team to meet the individualrequirements o the business or premises – tailor made or
your speci c development.
• Direct or Gravity options are available – the Direct systempumps water rom the RainSava storage tank. The Gravitysystem uses a header tank to store the ltered water rom
the RainSava tank and delivers the water by gravity to the
required location.
Rainwater can be used or:
• Toilet Flushing
• Wash down
• Vehicle Washing
• Irrigation
• Washing Machines
RainSava Commercial System
8/9/2019 Rainwater Harvesting Systems - Bord na Móna
http://slidepdf.com/reader/full/rainwater-harvesting-systems-bord-na-mona 5/6
Puri ed water is required for drinking, cooking, dishwashing and bodycare:
but these uses account or less than hal the water usage o a typical
household. Almost one third o the average household’s water is fushed
down the toilet. Rainwater can be used or toilet fushing, washing machine,
garden watering and car washing.
R a i n w a t e r H a r v e s t i n g
www.bnm.ie
Advantages o Rainwater Harvesting
• Can save up to 50% mains water usage.
• Reduced water bills.
• Improves sustainability of water use.
• Adds value to property.
• Low maintenance.
• Soft rainwater creates no lime scale.
• Below ground tank (cool and dark), low visual impact,no algae growth.
• Rainwater best for garden watering.
Why Choose Bord na Móna Environmental?
• Over 20 year’s industry experience.
• Supplier of reliable, sustainable rainwater harvesting solutions.
• Never compromise on quality.
• A range of options: Rainwater harvesting systems for a broadrange o applications (single house and commercial systemsavailable).
• Customer focused and responsive: assistance from pre-planning to delivery.
• International experience: Ireland, UK & USA.
8/9/2019 Rainwater Harvesting Systems - Bord na Móna
http://slidepdf.com/reader/full/rainwater-harvesting-systems-bord-na-mona 6/6
Bord na Móna Environmental LtdHead O fceNewbridge, Co. Kildare.
Tel: 1850 381136Tel: 045 439000Fax: 045 432312E-mail: ed.in [email protected]: www.bnm.ie w
w w . b
n m . i e
Rainwater Harvesting:• RainSava Domestic & Commercial
Systems
Single House:• Pura o Single House• Platinum Single House (Package Plant)• Pura o Tertiary Treatment
• Phosphorus Reduction
Sur ace Water Treatment:• Silt Traps• Separators• Storm Water Attenuation Tanks
Services:• National Network of Agents/Installers
• Pre-Planning Site Speci c Reports/Quotations• Delivery/Installation/Commissioning• Service Contracts• Maintenance Call Out Service
Commercial/Small CommunitySystems:• Pura o Multiple Module• Pura o Peat Filter Bed• Pura o Tertiary Treatment• Moving Bed Biological Reactor (MBBR
- Concrete Tank Mechanical Aeration)• Platinum 2000 Series (GRP Package
Mechanical Aeration)• High Rate Sand Filters• Reed Beds• Pumping Stations• Nutrient Removal• Telemetry Monitoring• Flow Metres• Composite Sampling
Product Range: